Feed device for sewing-machines.



W. CRONENBERG.

FEED DEVICE FOR SEWING MACHINES.

APPLICATION FILED NOV H. I914- RENEWED OCT- 3,1916.

Patented Apr. 3, 1917 4 SHEETS-SHEET l.

WITNESSES v INVENTORY WIHIGHI I ATTORNEYS Cronen berg W. CRONENBERG.FEED'DEVICEFOR SEWINGVMACHINES. APPLICATION map NOV. 11. 1914. npuswsoOCT. 3. 1916.

Patented Apr. 3, 1917.

4 SHEETS-SHEET 2.

WiHiamCronenbe W/ZNESSES W. CRONENBERG.

FEED DEVICE FOR SEWING MACHINES.

APPLICATION mzo uov.n.1914. RENEWED OCT. a, 1916.

Patented Apr. 3.1917.

4 SHEETS-SHEET 3 l/VVE/VTOR ronenberg Tia-J ,5.

William C A TTOR/VEYS WITNESSES W. CBONENBERG.

FEED DEVICE ron'sewma MACHINES. v

APPLICATION FILED NOV. 11, I914. RENEWED OCT. 3.1916.

1 1; 1 5? 1 p11 a Patented Apr. 3,1917.

4 SHEETS-SHEET 4.

Rm 9 v W H E m m m M c L Q .N m n [M Y H" B J l W I o l H 3 0 N 0 W l AlWITNESSES WILLIAM GRONENBERG, OF BROOKLYN, NEW YORK, ASSIGNOR TQ MORRISBERNI-IARD I (30., F NEW YORK, N. Y.

Specification of Letters Patent.

. Patented Apr. a, ram.

Application filed November 11, 1914, Serial may/1:503. Renewed Octobera, 1916. Serial No. 123,605.

. i l O To all. whom it may concern:

Be 1t known that I, WILLIAM CRONENBERG, a citizen of the United States,anda-resident of the city of New York, borough of Brooklyn, in thecounty of Kings and State of New York, have invented a new and ImprovedFeed Device for Sewing-Machines, of which the following is a full,clear, and exact description.

The invention relates to sewing machines provided witha stitch-formingmechanismv having a reciprocating and sidewise oscillating needle bar.

The object of the invention is to provide a new and improved feed deviceforsewing machines more especially designed for feed? ing two fringebodies and a bunch of loose strands simultaneously to the stitch-formingmechanism and relatively to each other so that the bunch of strands istied at intervals and the fringe loops are sewed alternately to thebunch of strands on opposite sides to ultimately produce two fringeseach having tassels or pendants of approximately spherical or globularshape.

7 In older to accomplish thedesired result use is made of a feeddevice'coacting with the stitch-forming mechanism of the sewing machinefor intermittently feeding a bunch -of strands and two fringe bodieshaving loops to saidstitch-forining mechanism for th latter to sew theloops to the bunch of strands alternately at opposite sides and for.

looping the sewing threads .around the bunch of strands at the loops.Use is also madeof delivery means on which the loops ofthe fringe bodiesare placed by the operator and delivered to the feed wheels for the Ilatter to feed the fringe .bodie's along to- 4m gether with the bunch ofloose strands.

' A practical embodiment of the invention is represented in the,accompanying drawings forming a part of this specification, in

which similar characters of reference indi- 5 cate corresponding partsin all the vie s. r

. Figure 1 is a plan view of the feed evice as mounted on the table of asewing machine, parts being shown broken out;

Fig. 2 is a side eleyationlof the feed device as applied to a sewingmachine, part ofthe' latter being shown in section; 1

Fig. 3 is a cross section of the feed device on the line 3-3 'of'Fig. 15I Fig. 4 is a sectional side elevation of the same on the line 4-4 ofFig. 1; f

Fig. "5 is a perspective View of a portion of one. of the feed wheels;

. Fig. 6 is a side elevation of the same and showing a fringe loop inposition on the combined hook and needle plate of the feed the sectionbeing on the line 88 of Fig. 1;

Fig. 9 1s a like View of the same and showmg the loop advanced on thedelivery pin;

Fig. 10 is a similar view of the same and showing the fringe loopdelivered to .the

combined hook and needle plate of the feed .wheel Fig. 11' is asectional plan view of the tubular guide'for the bunch of strands; Fig.12 is a sectional side elevationof the same; p

1 Fig. 13 is a cross section of the sewing machine on the line 13'13 ofFig. 2, and show I ing more particularly the cam mechanism 'foractuating the feed wheels;

Fig. 14 is a sectiona plan View of the same .on the line l i-14 of Fig.13; and Fig. 15 is a side elevation of the fringe 35 produced by themachine.

In order to -.form the fringe shown in Fig.

'15, two fringe bodies A and Aare fed s imultaneously by the feed devicethrough the sewing machine, the fringe bodies being provided with spacedloops A A to be sewed alternately by the sewing machine to oppositesides of a bunch of loose strands or threads A the sewing threads tyingthe bunch of strands at each loop A, A so that when the bunch of strandsis ultimately cut intermediate successive loops A A then two fringes areformed and the loose strands of each loop readily-spread into sphericalor globularshape to form a tassel or pendant A as will be readilyunderstood byreference to Fig. 15.

The sewing machine B to which the feed device is shown applied isprovided with a stitch-forming mechanism consisting of a sidewiseoscillating needle bar B carrying a sewing needle B operating inconjunction with a looper mechanism B arranged be- 1 low the table B ofthe'sewing machine; as plainly shown in Fig, 4. On the top of thetable'B are arranged two horizontally disposed feed wheels C, C arrangedone alongside the other and with their adjacent peripheral edges at theneedle 13 so that the latter operates alternately in conjunction withthe two feed wheels, as hereinafter more fully explained. The feedwheels C, C are alike in'constru'ction and each is provided on itsperipheral face with an annular feed groove C the wall of which ispreferably roughened or ribbed to cause the walls of the two feed.wheels to take a good hold of the bunch of strands A to feed the samerearwardly at the time the wheels C, C' are rotated intermittently inunison and at the time the needle is out of engagement with the feedwheels (see Fig. 2). The rim of each feed wheel C, C is provided withspaced combined hooks and-needle plates C and needle plates Calternating with the combined hooks and needle plates C and the two'feedwheels 0 and C are so arranged that the needle plate C of one feed wheelis in register with the combined hook' and needle plate of the otherfeed wheel at the time the feed wheels are at rest, and the saidregistering needle plate and combined hook and needle plate are inalinement with the needle B (see Fig. 1). Each needle plate 0'' isformed by providing a radial slot in the rim of the corresponding feedwheel Cor C thesaid slot intersecting the groove C and each combinedhook and needle plate C is in the form of a forked hook which risesabove the upper surface of the feed wheel C to receive the correspondingloop A or, A of the fringe body A or. A and to allow the needle B topass through the opening in the fork and through the loop for sewing thelatter onto the corresponding side of the bunch of strands A. Byproviding the peripheral faces of the feed wheels C,

Cwith radial feed grooves G a central feeding means is provided for thebunch of strands A, and by providing the rim of each feed wheel withspaced combined hooks and I, needle plates (3?, side feeding means areprovided forthefr-inge-bodies A and A to feed the loops A A thereof toopposite sides of the bunch of strands A When the feed wheels C and Care atrest 4 and the needle plate 0* of, say, thefeed wheel C is inregister with the combined hook and needle plate C of the otherfeedwheel C, with a loop A in position on this bar B first descends while incentral posiat the middle thereof to form through the looper device Bavcentral stitch on the bunch of strands A The needle bar B ,on

. rising'to uppermost position is next oscillatedto, say, the left-handside, to form on its-nextdescentthroughthe needle plate G a secondstitch on the left-hand side of the bunch of strands A The needle bar onnext passes through the needle plate of the hook .(Fuand through theloop A to form a third stitch on the right-hand side of the bunch ofstrands A thus attaching the loop A to this right-hand side of the bunchof strands A. This forming of stitches alternately on op posite sides ofthe bunch of strands A is twice repeated so that three stitches areformed on each side of the bunch of strands After the last of the sidestitches is formedthe needle bar B on its rise returns to centralposition and then descends to form another stitchat the middle of thenext needle plate C of the feed wheel C" 'move into register at theneedle 13.

The feed wheels C'and C now come to rest and the stitch-formingmechanism again makes the eight stitches as above described to fastenthe loop A of the fringe body A to the lefthand side of the bunch ofstrands A and to tie the bunch of strands at this oint by the sewingthread and the shuttle t read. The above described operation is thenrepeated so that the bunch of strands A is tied at intervals and theloops A A are alternately attached to the opposite sides of the bunch ofstrands A The bunch of strands A is guided between the feed wheels C, Oby a' tubular guide D fastened to the table B and having its sidessegmentalto conform to the peripheral faces of the feed wheels C and C,

as will be readily understood by reference to Figs. 1, 11 and 12. The"fringe bodies A and Aare guided in their rearward move- .tion thuscausing the sewing needle B? to the. corresponding hook C of the feedpass down through the bunch of strands A iwheels C, 0 use is made of twodelivery a devices F and F held on the table B on opposite sides of theguide D. The delivery devices Fand F are-alike in construction,

' meanness the table B The inner edge of each block 1*? is segmental andextends close to the pe r pheral face of the corresponding feed wheel Cor Q, and each bearing F isaopen at the top. and is of s'ufiicient sizeto allow the conical pin F a loose movement in'the bearing to permit theloop A or A to slide over the pin and through the bearing onto thecorresponding hook C in register at the time withthe inner or base endof the cor-; p respondlng pin F or F By reference to C Fig. 1, it willbe noticed that the two pins F F ofeach delivery device F, F" are spacedapart a distance corresponding to that between a combined hook andneedle plate C and the adjacent needle plate C of the feed wheel, andwhen the feed wheels C and C are at rest the corresponding hook andneedle plate C and the needle plate C yond the-outer edges of theblocks} so that the operator in charge of the machine'can readily placethe loops A A onthe outermost pins F of the delivery devices F and F.Now when the feed wheels C and C are intermittently rotated aspreviously explained then the fringe bodies A and A are pulledrearwardly by the loops A A held in engagement with the hooks C of thefeed wheels C and C; As the fringe bodies A and A advance the loops AA-;, hooked onto the pins F by the operator, are caused to slide overthe pins and through the bear- .ings F onto the hook C then in registerwith the base end of the correspondingipin to cause the loop A or A tofinally slip over the pin F and onto the hook C (see,

Figs. 8 9 and 10). In case the operator fails to place a loop A or A onthe corresponding pin F then the said loop is placed onto the. auxiliarypin F and as this pin is in register with the corresponding hook C? onthe next turning of the feed wheels C, C it is evident that the loop isslipped onto the hookin the same way as above described in reference tothe pins F Various means may be employed for imparting an intermittentrotary motion to the feed wheels C, C in unison with the stitch-formingmechanism. As shown in the drawings, use is made'of ratchet wheels G, Gsecured to the upper. faces of the-feed wheclsC, Cand engaged by pawlsH, H pivoted on a lever l fulcrumed at l nthe top of the table 13*. Thepawls H and H are pressed on by springs H I-Pto hold the pawls incontact with the peripheral faces ofthe two delivery the ratchet wheelsG, G. When the lever I is oscillated the pawls H and H impart anintermittent rotary motion to the feed wheels C .and C in the directionof the arrows a,

b, as plainly indicated'in Fig. 1. The lever I is pressedon bya spring Iand its free endis provided with a pin or friction roller I in contactwith the peripheral face of a cam J secured on the upper end of a shaftJ journaled. in suitable bearings arranged on the table B .(see Figs. 2,13 and 14). On the shaft J is secured a ratchet wheel K engaged by apawl K fulcrumed on a lever K mounted to swing loosely on 'the shaft Jas a fulcrum. The ratchet wheel K, as shown in Fig. 14, is provided witheight teeth in conformity with the number of stitches required for tyinga loop A or A to the bunch of strands A, but it is'understood thatwhenit is desired to make more or less central and side stitches. at atime on the bunch of strands A then the number .of teeth in the ratchetwheelv K are correspondingly increased or diminished. N The pawl K ispressed on by a spring K to hold the pawl in enga ement with the teethof the ratchet whee K A spring: pressed biock L is pivoted on the underside of the table 18 and engages the teeth of the ratchet wheel K tohold the latter against return movement. Thetlever K ispivotally'connected by a link N with the upper end of a lever Nfulcrumed at its lower end at N on a bracket N depending from the table13*.

The lever 'N is provided intermediate itsends with'a pin or frictionroller N engaging a cam groove 0 in a cam O secured on the main shaft Pof the sewing machine so that when the shaft P is turned a. rotarymotion is given. to the cam O to impart a swinging motion to the lever lWlllCh by the link N, lever K and pawl K causes the ratchet wheel K torotate intermittently to rotate intermittently the cam J. Theintermittent rotary motion given to the cam causes an intermittentswinging of the lever l to cause the pawls H and H to intermittentlyturn the ratchet wheels G, G and consequently the feed wheels 0, C, asabove described.

On the lower end of the shaft J is secured a cam Q engaged by a frictionroller Q journaled on a lever Q pivoted at Q on a bracket Q attached to.or forming part of. the table 13. The lever Q is pivotally connected bya link R with the mechanism.- S

for imparting a sidewise swinging motion to the pivoted frame T in whichthe needlebar B is mounted to slide up and down. As this mechanism S andframe I are of the usual construction in sewing machines of this typefurther 'detailed description of the same is not deemed necessary, itbeing understood that the cam Q, is so arranged that the desiredsidewise-swinging movement is given to the needle bar B in unison withthe intermittent turning of the feed wheels C, C

as above described.

In order to prevent accidental return movement of-the feed wheels 0, Cuse. is

made of spring-pressed dogs U and U fulcrumed on the top of the table Band adapted to engage successively the combined hooks and needle platesC and the needle plates 0 aswill'be readily understood by refer ence toFig. 1.

Having thus described my invention, I claim as new and desire to secureby Letters Patent i 1. In combination, with stitch-forming mechanismhaving a looper and a needle bar having up and down and sidewiseoscillating movements,- an intermittently actuated feed device coactingwith the said stitch-forming mechanism and having means forintermittently feeding a bunch of strands to the said stitch-formingmechanism, the said feed device having spaced hooks adapted to beengaged by fringe loops on a fringe body to feed the latter in unisonwith the said bunch. of strands to the said stitch-forming mechanism forthe latter to sew a loop to the said bunch of strands and to loop thesewing thread around the bunch of strands. I

2. In combination with stitch-forming mechanism having a looper and aneedle bar having up and down and sidewise oscillating movements, anintermittently actuated feed device coacting with the said stitchformingmechanism and having means for;

intermittently feeding a bunch of strands to the said stitch-formingmechanism, the said feed. device having. spaced combined hooks andneedle plates, of which the hooks are adapted to be engaged by fringeloops on a fringe body and the sewing needle is adapted to pass throughthe needle plate, a central guide forflguidin the bunch of strands tothe saidfeeding evice, and a side guide for the passage of the fringebody and open at its 1I1I18I" side for the passage of the fringe loops.

'3. In combination with stitch-forming mechanism, a pair ofintermittently revolving feed wheels coacting with the saldstitchforming mechanism, the said feed Wheels having peripheral groovesfor feeding a bunch of strands between them, the said feed wheels beingprovided along the pe ripheries with spaced combined hooks and needleplates, of which the hooks are adapted to be engaged by the fringe loopsand the sewing needle is adapted to pass through the needle plate,

, 4. In combination with stitch-forming mechanism, a pair ofintermittently revolving feed wheels coacting with the saidstitch-forming mechanism, the said feed wheels having peripheral groovesfor feeding a bunch of strands between them, and the said feed wheelsbeing provided along the peripheries with spaced combined hooks andneedle plates, of Which the hooks are adapted to be enga ed by thefringe loops and the sewing ne dle is adapted to'pass through the needleplate, the combined hooks and needle plates of the said feed wheelsbeing arranged alternately.

5. In" combination with stitch-forming mechanism, a pair ofintermittently revolv;

ing feed wheels coacting with the said stitch-forming mechanism, thesaid feed wheels having peripheral grooves for feeding a bunch ofstrands between them, the said feed wheels being provided along theperipheries with spaced combined hooks and needle plates, of which thehooks are adapted to be engaged by the fringe loops.

and the sewing needle is adapted to pass through the needle plate, thecombined hooks and needle plates of the said feed plate of the otherfeed wheel registering with each other at the stitch-forming mechanism.

7. In combination with stitch-forming mechanism, a pairof'intermittently revolving feed wheels arranged one alongside the otherand having peripheral grooves for feeding a bunch of strands, betweenthem, each wheel having spaced needle plates along its peripheral faceand spaced combined hooks and needle plates arranged alternatelyrelatively to the needle plates, the hooks being adapted to receive oopsof the fringe body, the needle plate of one feed wheel and the combinedhook and needle with each other at the stitch-forming mechanism, anddelivery means for delivering the fringe loops onto the said hooks ofthe feed wheels.

8. In combination with stitch-forming -mechanism, a pair ofintermittently revolving feed wheels arranged one alongside the otherand having peripheral grooves for feeding a bunch of strands betweenthem, each wheel having spaced needle plates along its peripheral faceand spaced combined hooks and needle plates arranged alplate of theother feed wheel registering fringe body, the needle plate of one feedwheel and the combined hook and needle plate of the other feed wheelregistering with each other at the stitch-forming mechanism, fixedbearings adjacent the peripheral faces of the said feed wheels and inregister with the said hooks and needle plates at the time the feedwheels are at rest, the bearings being open at the tops, and pinsmounted loosely in thesaid bearlngs and having their points projectingat thefront of the bearings for the operator to place the fringe loopsin position on the said projecting p'in ends. 1

9. In combination with stitch-forming mechanism, a pair ofintermittently revolving feedwheels arranged one alongside the other andhaving peripheral grooves for feeding a bunch of strands between them,

each wheel having spaced needle plates along -its peripheral face, andspaced combined hooks and needle plates arranged alternately relatlve tothe needle plates,'the hooks being adapted to receive loops of thefringe body,

I the needle plate of one feed wheel and the combined hook and needleplate of the other feed wheel registering with each other at'thestitch-forming mechanism, fixed bearings adjacent the peripheral facesof the said feed wheels and in register with the sald hooks and needleplates at the time the feed wheels are at rest, the bearings being openat the top, pins mounted loosely in the said bearingsand having theirpoints proectlng at the front of the bearings for the operator tojplacethe fringe loops in position on the said projecting pin ends, fixedauxriphery of the feed wheel,

iliary bearings rearward of the first-named bearings, and auxiliary pinsin the said auxiliary bearings.

10. A feed device for sewing machines having a feed wheel provided onits peripheral face with an annular feed groove, combined hooks andneedle and needle plates on the periphery-of the feed wheel andalternating with the said combined hooks and needle plates. I

11. A feed device for sewing machines having a feed wheel provided atits peripheral face with an annular feed groove and with spaced forkedhooks-each adapted to receive a fringe loop each forkedhook forming aneedle plate for the passage of the sewing needle.

12. A feed device for, sewing machines and with spaced forked hooks eachadapted ripheral facewith an annular feed groove to receive a fringeloop, each forked hook forming a needle plate for the passage of thesewing needle, the needle plate intersecting the fol ml ove. K

plates on the pefeed device also having at m 13. In combination with a"stitch-forming mechanism, an intermittently revoluble feed wheel'coacting with the said stitch-forming mechanism and provided at itsperiphery with forked hooks forming a needle plate and adapted toreceive fringe loops, the. sewing needle in its descent passing throughthe opening of the hook.

14. In combination with stitch-forming mechanism having a sidewiseoscillating nee-" mg with a needle plate of the other feed wheel at thetime the wheels are at a standstill, the registering hook and needleplate then being in coa'cting position with the needle bar. v

15. In combination with a stitch-forming mechanism having a sidewiseoscillating needle bar, a pair of feed wheels coacting with the saidstitch forming mechanism and rotating intermittently, the feed wheelshav ing peripheral feed grooves for feeding a bunch of loose strands,each feed wheel having alternating ooks and needle plates along itsperiphery, a hook of one feed wheel registering with a needle plate ofthe other feed wheel at the time the feed wheels are at a standstill,the registering hook and needle plate then being in coacting positionwith the needle bar, a fixed tubular guide f ras I,

feeding a bunch of strands to the said peripheral grooves, fixedbearings adjacent the peripheral facesof thefeed wheels on oppositesides of the said guide, the bearings be ing open at the top and at bothends, and

of'loose strands, each feed wheel having ,al--

ternating hooks and needle plates along its periphery, a hook of onefeedwheel registering with a'needle plate of the other feed wheel'at'thetime the feed wheels are at a standstill, and means for rotatingtheifsaid feed wheels'intermittently.

17. In combination with stitch-formingmedhanism having-a looper and aneedle bar having up and down and sidewise oscillating movements, a feeddevice having central feeding means for intermittently feeding a bunchof strands centrally relatively to the stitch-forming mechanism, thesaid v side for intermittently feeding a fringe body mechanism havingmeans for forming a sehaving spaced loops to the said stitch-formingmechanism at one side of the said bunch of strands for thesaidstitch-forming-mecharies of central and side stitches, a feed devicecoacting with the said stitch-forming mecha nism and having centralfeedingmeans for;

, intermittently feeding a bunch of strands centrally to the saidstitch-forming mechanism, the said feed device also having feeding meansat opposite sides of the said central feeding means for intermittentlyfeeding two fringe bodies having loops to opposite sides of the saidbunch of strands at the said stitchformingmechanism for the latter to 20sew the loops to the bunch of strands alternately on opposite sidesthereof and to loop the sewing thread around the bunch of strands.

In testimony whereof I have signed my 25 name to this specification inthe presence of two subscribing witnesses.

WILLIAM ORONENBERG.

' Witnesses? Trmo. G. Hos'mn,

PHILIP D. ROLLHAUS.

